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Last Updated: January 27, 2023

Details for Patent: 6,649,180


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Summary for Patent: 6,649,180
Title: Hard capsule formed of cellulose ether film with a specific content of methoxyl and hydroxypropoxyl groups
Abstract:A cellulose ether film is formed of a composition comprising a cellulose ether as a base in which some of the hydrogen atoms of cellulosic hydroxyl groups are replaced by alkyl groups and/or hydroxyalkyl groups, a gelling agent, and a gelling aid. The total content of alkoxyl and hydroxyalkoxyl groups in the cellulose ether is limited to 23-37.6% by weight, which is effective for preventing the gelling aid from precipitating out and maintaining a favorable outer appearance during long-term storage.
Inventor(s): Matsuura; Seinosuke (Kyoto, JP), Tanjoh; Masaru (Sakurai, JP)
Assignee: Shionogi Qualicaps Co., Ltd. (Yamatokoriyama, JP)
Application Number:09/549,205
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 6,649,180
Patent Claim Types:
see list of patent claims
Composition; Compound; Dosage form;

Drugs Protected by US Patent 6,649,180

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

Foreign Priority and PCT Information for Patent: 6,649,180

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan11-106689Apr 14, 1999

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